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[Qemu-devel] [PATCH 00/34] migration thread and queue
From: |
Juan Quintela |
Subject: |
[Qemu-devel] [PATCH 00/34] migration thread and queue |
Date: |
Wed, 19 Dec 2012 13:33:23 +0100 |
Hi
This is my queue for migration-thread and patches associated. This
integrates review comments & code for Paolo. This is the subset from
both approachs that we agreed with. rest of patches need more review
and are not here.
Migrating and idle guest with upstwream:
(qemu) info migrate
capabilities: xbzrle: off
Migration status: completed
total time: 34251 milliseconds
downtime: 492 milliseconds
transferred ram: 762458 kbytes
remaining ram: 0 kbytes
total ram: 14688768 kbytes
duplicate: 3492606 pages
normal: 189762 pages
normal bytes: 759048 kbytes
with this series of patches.
(qemu) info migrate
capabilities: xbzrle: off
Migration status: completed
total time: 30712 milliseconds
downtime: 29 milliseconds
transferred ram: 738857 kbytes
remaining ram: 0 kbytes
total ram: 14688768 kbytes
duplicate: 3503423 pages
normal: 176671 pages
normal bytes: 706684 kbytes
Notice the big difference in downtime. And that is also seen inside
the guest a program that just do an idle loop seeing how "long" it
takes to wait for 10ms.
with upstream:
address@hidden ~]# ./timer
delay of 452 ms
delay of 114 ms
delay of 136 ms
delay of 135 ms
delay of 136 ms
delay of 131 ms
delay of 134 ms
with this series of patches, wait never takes 100ms, nothing is printed.
Please review.
Thanks, Juan.
The following changes since commit 914606d26e654d4c01bd5186f4d05e3fd445e219:
Merge remote-tracking branch 'stefanha/trivial-patches' into staging
(2012-12-18 15:41:43 -0600)
are available in the git repository at:
git://repo.or.cz/qemu/quintela.git thread.next
for you to fetch changes up to 065bebbacf54dcad48aad42112417dbb44451499:
migration: merge QEMUFileBuffered into MigrationState (2012-12-19 13:21:29
+0100)
----------------------------------------------------------------
Juan Quintela (25):
migration: include qemu-file.h
migration-fd: remove duplicate include
buffered_file: Move from using a timer to use a thread
migration: make qemu_fopen_ops_buffered() return void
migration: move migration thread init code to migrate_fd_put_ready
migration: make writes blocking
migration: remove unfreeze logic
migration: just lock migrate_fd_put_ready
buffered_file: Unfold the trick to restart generating migration data
buffered_file: don't flush on put buffer
buffered_file: unfold buffered_append in buffered_put_buffer
savevm: New save live migration method: pending
migration: move buffered_file.c code into migration.c
migration: add XFER_LIMIT_RATIO
migration: move migration_fd_put_ready()
migration: Inline qemu_fopen_ops_buffered into migrate_fd_connect
migration: move migration notifier
ram: rename last_block to last_seen_block
ram: Add last_sent_block
memory: introduce memory_region_test_and_clear_dirty
ram: Use memory_region_test_and_clear_dirty
ram: optimize migration bitmap walking
ram: account the amount of transferred ram better
ram: refactor ram_save_block() return value
migration: merge QEMUFileBuffered into MigrationState
Paolo Bonzini (7):
migration: fix migration_bitmap leak
buffered_file: do not send more than s->bytes_xfer bytes per tick
migration: remove double call to migrate_fd_close
exec: change ramlist from MRU order to a 1-item cache
exec: change RAM list to a TAILQ
exec: sort the memory from biggest to smallest
migration: fix qemu_get_fd for BufferedFile
Umesh Deshpande (2):
add a version number to ram_list
protect the ramlist with a separate mutex
Makefile.objs | 2 +-
arch_init.c | 245 +++++++++++++++---------------
block-migration.c | 49 ++----
buffered_file.c | 269 ---------------------------------
buffered_file.h | 22 ---
cpu-all.h | 15 +-
dump.c | 8 +-
exec.c | 128 +++++++++++-----
memory.c | 16 ++
memory.h | 16 ++
memory_mapping.c | 4 +-
migration-exec.c | 3 +-
migration-fd.c | 4 +-
migration-tcp.c | 3 +-
migration-unix.c | 3 +-
migration.c | 390 ++++++++++++++++++++++++++++++++++++------------
migration.h | 13 +-
qemu-file.h | 5 -
savevm.c | 24 ++-
sysemu.h | 1 +
target-i386/arch_dump.c | 2 +-
vmstate.h | 1 +
22 files changed, 599 insertions(+), 624 deletions(-)
delete mode 100644 buffered_file.c
delete mode 100644 buffered_file.h
- [Qemu-devel] [PATCH 00/34] migration thread and queue,
Juan Quintela <=
- [Qemu-devel] [PATCH 01/34] migration: fix migration_bitmap leak, Juan Quintela, 2012/12/19
- [Qemu-devel] [PATCH 02/34] buffered_file: do not send more than s->bytes_xfer bytes per tick, Juan Quintela, 2012/12/19
- [Qemu-devel] [PATCH 03/34] migration: remove double call to migrate_fd_close, Juan Quintela, 2012/12/19
- [Qemu-devel] [PATCH 04/34] migration: include qemu-file.h, Juan Quintela, 2012/12/19
- [Qemu-devel] [PATCH 05/34] migration-fd: remove duplicate include, Juan Quintela, 2012/12/19
- [Qemu-devel] [PATCH 07/34] exec: change RAM list to a TAILQ, Juan Quintela, 2012/12/19
- [Qemu-devel] [PATCH 06/34] exec: change ramlist from MRU order to a 1-item cache, Juan Quintela, 2012/12/19
- [Qemu-devel] [PATCH 09/34] add a version number to ram_list, Juan Quintela, 2012/12/19
- [Qemu-devel] [PATCH 08/34] exec: sort the memory from biggest to smallest, Juan Quintela, 2012/12/19
- [Qemu-devel] [PATCH 11/34] buffered_file: Move from using a timer to use a thread, Juan Quintela, 2012/12/19